Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!pasteur!ames!killer!jccc From: jc...@killer.Dallas.TX.US (Juan Castillo) Newsgroups: comp.sys.att Subject: Re: Adding a VGA to a 6300 Message-ID: <7532@killer.Dallas.TX.US> Date: 14 Mar 89 03:21:10 GMT References: <7514@pyr.gatech.EDU> Reply-To: jc...@killer.Dallas.TX.US (Juan Castillo) Organization: The Unix(R) Connection BBS, Dallas, Tx Lines: 93 In article <75...@pyr.gatech.EDU> byron@pyr.gatech.edu.UUCP (Byron A Jeff) writes: >Could someone send me the copy of the instructions for installing a VGA >card into a 6300? This is the info I've picked up so far. > >1. Get 1.43 BIOS from ATT. Install it. >2. Replace a 7400 in the 6300 with a jumper dip. Where on the board is > that 7400 and what is the schematic for the dip header? >3. Disable the internal video. Does step 2 above acoomplish this? >4. Install the VGA card. > >Is there anything else I'm missing? >Has anyone had major problems getting their cards installed? > >All responses will be greatly appriciated. Please mail any responses. > >BAJ >-- >Another random extraction from the mental bit stream of... >Byron A. Jeff >Georgia Tech, Atlanta GA 30332 >Internet: by...@pyr.gatech.edu uucp: ...!gatech!pyr!byron What you must do to upgrade your AT&T6300 to VGA, EGA or Hercules. 1. Have ROM BIOS 1.43 installed (AT&T part #105203780) 2. Disable the resident video board (see notes) 3. Install video board that is compatible with monitor being used 4. Change motherboard dip switches (Dip Switch Block #1 at 7w, switches 5 & 6 must be on. More info in AT&T 1.43ROM BIOS booklet) 5. Install the 6300BUSS CORRECTION KIT (W. ALLEN ASSOCIATES part #ABC02) {AT&T Parts - (800) 222-7278} {W.ALLEN - (408) 257-9739} Notes on disabling the resident video board: Open the top of the machine and look for a yellow tag on the resident video board. In top center line of the tag is a GO#. The various GO versions and how they are disabled include: 1. GO317 - This is a P2a board. The board must be removed and replaced by an AT&T Bridge Adapter Board (AT&T part #405067281) 2. GO318 - This is either a P2 or P4 board. You can disable these with the AT&T disabler chip (part #405098625) or the W ALLEN chip that is included with the ABC01 BUSS CORRECTION KIT (the ABC02 doesn't have this chip). The disabler chip will replace a socketed IC labeled PL68. This chip is located at location 5H (P4 video board) or 5G (P2 video board). 3. GO380 - This is the P8 board which has jumpers labeled W1, W2, W3 and a double jumper "A". Disabling of this may be done by moving the jumper W1 from 2&3 to 1&2. VIDEO BOARDS WHICH HAVE BEEN SUCCESFULLY RUN ON AT&T 6300 PC WITH A COMPATIBLE COLOR MONITOR. I. EGA cards by the following manufacturers: AT&T VDC750 (using AT&T 319 monitor) STB MULTIRES II (with 9-25 pin cable for use on AT&T 319 monitor or plain withother monitor) Video 7 EGA EVEREX EGA TAXAN EGA and GOLD CARD PARADISE EGA MAX LOGIC EGA STB EGA GENOA EGA Gemini Technology EGA ATI WONDER (was reported that some folks had difficulties with this, others had none) Only EGA cards said not to work include : RENASSANCE LEGACY HP NEC BOCCA II. VGA cards by the following manufacturers: EVEREX PARADISE MAX LOGIC (with ROM BIOS OF 212) ATI VIP QUADRAM GENOA (some had difficulties with this one) SIGMA (requires special cable for Multisync monitors, W. ALLEN will provide information) VIDEO 7 (requires special software if using with Math co-processor in machine, W. ALLEN has this software) ORCHID (not totally GCA backward compatible) STB VGA EXTRA EM